G.Skill Trident Z Series 64GB (2 x 32GB) 288-Pin SDRAM (PC4-25600) DDR4 3200 CL16-18-18-38 1.35V Dual Channel Desktop Memory Model F4-3200C16D-64GTZR at Amazon.com
Corsair Vengeance LPX 64GB (4x16GB) DDR4 3000 (PC4-24000) C16 1.35V Desktop memory - black PC memory CMK64GX4M4D3000C16 at Amazon.com